As
the floor slab / raft was of reinforced concrete it was not possible to
introduce a sunken sump and it was therefore decided to use the Dry Track
perimeter drainage system for water management. This was a pre-fabricated
plastic moulded skirting which was resin fixed to the floor slab,
allowing water to enter behind the Dry Track channel and run around the
room to the location of the pump, which was sited in a shallow sump
liner.
The
system was installed over the existing tiled floor with additional weep
holes being introduced around the perimeter walls which also relieved the
hydrostatic water pressure and accumulated water within the ground. The
lower sections of the wall and the pump housing were cosmetically boxed in
and the whole floor overlaid with the Delta MS 20 floor membrane with
moisture resistant chipboard, leaving the basement dry and free from damp
and the risk of future flooding.